LOS ANGELES -- The Dodgers on Wednesday extended invitations to keep their Minor League affiliates in Oklahoma City, Tulsa, Great Lakes and Rancho Cucamonga as part of MLB¡¯s new player development structure.

Oklahoma City and Tulsa would remain the Triple-A and Double-A affiliates, respectively. Great Lakes and Rancho Cucamonga would switch levels, with Great Lakes as Class A Advanced and Rancho Cucamonga as Class A.

With the invitations extended to the four communities, the Dodgers will have their Rookie teams work out of their Spring Training site at Camelback Ranch in Glendale, Ariz., and at Campo Las Palmas in the Dominican Republic.

¡°Our Minor League communities are an integral part of the success we have had at the Major League level as each affiliate provides high quality facilities and comprehensive support essential to developing world champion caliber players,¡± said president of baseball operations Andrew Friedman. ¡°We are proud of the stability our Minor League affiliates have provided over the years and we want to continue our relationships with Oklahoma City, Tulsa, Great Lakes and Rancho Cucamonga.¡±

Pending the acceptance of the invitations, the Dodgers will enter their seventh straight season with Oklahoma City and Tulsa. The organization will continue the relationship with Great Lakes for the 14th consecutive season and with Rancho Cucamonga for the 11th year.

On their Twitter accounts, Tulsa, Great Lakes and Rancho Cucamonga acknowledged the invitations.

Ogden is the one previous affiliate not extended an invitation.